science

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Across
  1. 2. Fuels-Fuels such as gasoline, oil, and coal contain large amounts of carbon when burned the carbon reacts with oxygen to create carbon dioxide which is then released back into the atmosphere
  2. 4. Cycle-nitrogen cycles through the environment
  3. 6. Cycle-The movement carbon from the atmosphere into living organisms, then into the earth, and finally back to the atmosphere
  4. 7. water in the clouds eventually returns to the earth by falling as precipitation
  5. 9. process by which a plant uses energy from the sun to turn carbon dioxide and water into into the sugar glucose
Down
  1. 1. the atmosphere water vapor cools and becomes liquid again in a process called condensation
  2. 3. leaves the earth through evaporation and enters the atmosphere as a gas called water vapor
  3. 5. organisms are decomposed by organisms such as bacteria and fungi using oxygen they convert many dead organisms’ carbon based structures into carbon dioxide which is cycled back into the atmosphere
  4. 8. Respiration-The process in organisms of breaking down molecules to produce ATP
  5. 10. Cycle-The movement of oxygen from the atmosphere into living organisms and back to the atmosphere